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Abstract

Objective To determine the association of socioeconomic status [SES; education and zip code-based annual household income (Z-AHI)] and ethnicity with health-related quality of life (HRQOL) among patients with systemic lupus erythematosus (SLE).

Conclusion SES is associated with HRQOL in SLE. Z-AHI and education are equally predictive surrogates of SES; however, Z-AHI, independent of education, was predictive of HRQOL. Z-AHI has less subject bias and is easily obtainable, therefore its use for future HRQOL studies is suggested.